18
2-9-2 USB
This motherboard supports 4 USB connectors in all. Two of those USB connectors
are available through the back-panel. The lay-out of the USB connector is as
follows:
If you want to make use of the other onboard USB ports you will need to purchase
a USB extension cable / bracket. This will connect to the onboard USB2 header.
For the lay-out of the USB2 header, refer to the following table:
+Vcc DATA- DATA+ GND
USB 1
USB2
1
2
7
8
Pin 1 Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
USB2
+5V GND DATA1- DATA2+ DATA1+ DATA2-
GND
+5V
2-9-3
Serial Ports
The serial ports can be used to connect devices such as a serial mouse and a
modem. A serial mouse is usually connected to COM1. Please refer to the
following table for the pin lay-out of the serial ports:
Pin 1
DCD (Data Carrier Detect)
Pin 6 DSR (Data Set Ready)
Pin 2
SIN (Serial IN or Receive Data)
Pin 7
RTS (Request To Send)
Pin 3
SOUT (Serial OUT or transmit data)
Pin 8
CTS (Clear To Send)
Pin 4
DTR (Data Terminal Ready)
Pin 9
RI (Ring Indicate)
Pin 5
GND
